Mischief-causing titanosaur

Rapetosaurus, a reasonably complete titanosaur from Madagascar that lived at the very end of the Cretaceous. This is mostly based on the 26 foot long "juvenile" specimen FMNH PR 2209.

Sauropods aren't really known for wild changes in their proportions as they grow, but at half the length and not even 1/4 the mass of an adult, clearly some changes may have occurred (the one trend that we do see is necks tend to lengthen somewhat and legs tend to get proportionately shorter - although much of that change should have already taken place at this age).

Also, from other specimens we know that the adults had armor nodules on them, but there isn't any evidence for ossified armor on the juvenile specimen, so I didn't illustrate them (also, this saved me a lot of time!).

Edit: Updated silhouette, although in this case the difference is quite a bit more pronounced than in some other taxa.